216454343454612 has 48 divisors (see below), whose sum is σ = 562302532680000. Its totient is φ = 72006855720480.

The previous prime is 216454343454593. The next prime is 216454343454631.

It is a happy number.

216454343454612 is a `hidden beast` number, since 2 + 1 + 6 + 4 + 5 + 43 + 43 + 4 + 546 + 12 = 666.

216454343454612 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (216454343454593) and next prime (216454343454631).

It is a super-3 number, since 3×216454343454612³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2008169439 + ... + 2008277222.

It is an arithmetic number, because the mean of its divisors is an integer number (11714636097500).

Almost surely, 2^{216454343454612} is an apocalyptic number.

It is an amenable number.

216454343454612 is an abundant number, since it is smaller than the sum of its proper divisors (345848189225388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216454343454612 is a wasteful number, since it uses less digits than its factorization.

216454343454612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4016447173 (or 4016447165 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 54.

The spelling of 216454343454612 in words is "two hundred sixteen trillion, four hundred fifty-four billion, three hundred forty-three million, four hundred fifty-four thousand, six hundred twelve".